[PATCH] drm/xe/xelp: Fix Wa_18022495364

Tvrtko Ursulin
2026-04-20T13:16:19Z

Command parser relative MMIO addressing needs to be enabled when writing
to the register.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Fixes: ca33cd271ef9 ("drm/xe/xelp: Add Wa_18022495364")
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v6.18+
---
drivers/gpu/drm/xe/xe_lrc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index 9d12a0d2f0b5..c725cde4508d 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -1214,7 +1214,7 @@ static ssize_t setup_invalidate_state_cache_wa(struct xe_lrc *lrc,
if (xe_gt_WARN_ON(lrc->gt, max_len < 3))
return -ENOSPC;

- *cmd++ = MI_LOAD_REGISTER_IMM | MI_LRI_NUM_REGS(1);
+ *cmd++ = MI_LOAD_REGISTER_IMM | MI_LRI_LRM_CS_MMIO | MI_LRI_NUM_REGS(1);
*cmd++ = CS_DEBUG_MODE2(0).addr;
*cmd++ = REG_MASKED_FIELD_ENABLE(INSTRUCTION_STATE_CACHE_INVALIDATE);

--
2.52.0